package aop;


import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

@Aspect
@Component
public class TransactionAspect {
    private static final Logger log = LoggerFactory.getLogger(TransactionAspect.class);

    @Pointcut("execution(* service..*.*(..))")
    public void pt(){}

//    @Before(value="execution(* service..*.*(..))")
    @Before(value = "pt()")
    public void before(JoinPoint jp){
        log.info("【TransactionAspect前置增强】模拟打开数据库连接并开启事务...");
        log.info("SqlSession sqlSession=MyBatisUtil.createSqlSession(false);");
    }
//    @AfterReturning(value="execution(* service..*.*(..))",returning = "result")
    @AfterReturning(value="pt()",returning = "result")
    public void afterReturning(JoinPoint joinPoint,Object result) throws Throwable {
        log.info("【TransactionAspect后置增强】模拟正常完成业务提交事务...");
        log.info("session.commit();");
    }
//    @After(value = "execution(* service..*.*(..))")
    @After(value = "pt()")
    public void after(JoinPoint jp){
        log.info("【TransactionAspect最终增强】模拟业务完成释放资源...");
        log.info("MyBatisUtil.closeSqlSession(sqlSession);");
    }
//    @AfterThrowing(value = "execution(* service..*.*(..))",throwing = "e")
    @AfterThrowing(value = "pt()",throwing = "e")
    public void afterThrowing(JoinPoint jp,Throwable e){
        log.info("【TransactionAspect异常抛出增强】模拟业务异常回滚事务，异常信息为："+e.getMessage());
        log.info("session.rollback();");
    }
}
